Valve construction.



G. A. BOOTH.

VALVE CONSTRUCTION. APPLICATION FILED MAY 2, 1912.

Patented Feb. 11,1913.

Fries..

CHARLES ALBERT BOOTH, OF BRUNSYVICK, MARYLAND.

VALVE CONSTRUCTION.

Specification of Letters Patent.

liatented Feb. i913.

Application filed May 2, 1912. Serial No. fifi lfifiit To all whom itmay concern:

Be it known that I, CHARLES ALBERT BOOTH, a citizen of the'UnitedStates, residing at Brunswick, in the county of Fred crick and State ofMaryland, have invented certain new and useful Improvements in ValveConstruction; and I do hereby declare the following to be a' full,clear, and exact description of thevinvention, such as will enableotlicrs skilled in the art to which it appertains to make and use thesame.

My inventionvrelates to new and useful.

improvements in valve construction and more particularly to that classknown as rotating cut-off valves and designed particularly for use inconnection with steam operated injectors.

My object is to provide a valve of this class which may be used inconnection with the injector to release pressure between the injectorand the check valve adjacent the boiler.

A further object is to so locate the valve that when the injector is' inoperation the exhaust pipe connected with the valve casing will beclosed.

A further object' is to so construct the valve that when the injector isnot in use the passage from the injector to the boiler willbe'completely closed.

A further object is to so construct the valve that one of the openingscommunicating with the valve casing may be partially uncovered, whilethe other opening remains following specification.

completely closed, and,

A further object is to provide means for operating the valvesimultaneously with the operation of the injector.

Other objects and advantages will be hereinafter set forth and pointedout in the I In the accompanying drawings which are made .a part of thisapplication, Figure l is a side elevation of an injector showing myimproved valve in section, and, Fig. 2 is an enlarged sectional view -ofmy improved I form of valve.

Referring to the drawings in which similar reference numerals designatecorresponding parts throughout the several views, 1 indicates theinjector which may be of the usual or any preferred type, such as isused for forcing water into a steam boiler and 2 indicates the leveremployed for operating the injector, one end of the leven being pivotedto parts oft-he injector frame.

shpwn) through the medium of a )0 0. said pipe being provided with acherir valve adjacent the end thereof entering the boiler, said checkvalve being of the usual or well known type adapted to prevent the steampressure in the boiler from entering the pipe. It frequently happensthat the check yalve l, for various reasons, springs a leak so that thepressure within the pipe 3 is the same as the pressure within the boilerand when such is the'case the injector will not properly work, as it isunable to overcome the pressure against the valves in the injector andfor this reason I have provided my improved form of rotating 'orpressure regulating valve 5, which valve is mounted in a cylindricalcasing 6 and said casing is connected with the pipe and injector throughports 7 and 8, respectively. The

valve 5 is so arranged that when the-injector is not in use the faces 9and 10 thereof are seated over the ports 7 and 8, respectively, andcompletely close communication therea greater extent whereby the port 7will bepartially o ened previous to the opening of the port 8. Byarranging the valve-in this manner the \pressure within the pipe 3 willpass into the upper portion of the casing 6 and througha central opening11 in the valve 5 and thence through an exhaust pipe 12 communicatingrespectively with the lower portion of the casin'g 6 and the overflowpipe 13 of the injector, thus relieving the pressure in the pipe 3 andgiving the jet of steam and water from the injector a clear passagethrough the pipe and permitting the same to travel flwith sufficientforce to readily overcome the steam pressure within the boiler.

The valve 5 is operated from the lever 52 of the injector, the stem 14of the valve projecting through one end of the casing 6 and having anarm 15 attached thereto which is in turn connected with a valveoperating arm 16 of the injector by link 17, the arm 16 being likewiseconnected to the lever 2 'through a link 18, although any otherpreferred means may be employed for operating the valve 5 in conjunctionwith the lever 2. The ,valve 5 and the interior of the 035- v prime theinjector, this operation rotatingthe valve 5 sutficiently to Open theport 7,.

ing, 6 are tapered from one end to the other so that the faces ofthefvalve may be kept but not a sutiicientdistance -to open the portthrough the opening 11 and exhaust pipe 12.

" the valve and p1pe3.

Itwill thus be seen thatI have provided 8 and if the check valve 4-should be leaking the pressure within the'p ipe 3 will beimmediatelyreleased and permitted to pass As soon as the injectorisproperly primed the lever 2 is thrown open its full distance whichwill result in giving the valve 5 a' half turn and'positioning the face9 overthe end of the exhaust pipe 12, closing communicat-iontherethrough, While. the opening 11 will be in direct alinement with theports 7 and 8, thus giving a-clear passage through means whereby theobjectionable features resulting from aleaky valve will be fullyovercome and one that will insure the operation'of'the injector-at alltimes. will likewise be seen that 'in view of the sim- ,plicity of thevalve it-can be very :ch'eaply constructed and readily applied to use Itwill further. be seen that, if desired, the valve can be located at asuitable point I within the injector proper and ituwill further be seenthat it can be successfully used in connection with other devices wherepresthe pipe,.one face of said valve having a.

overcome. V r r i What I claim is; e 1

sure resulting from a leakyvalve is to be .1. A pressure regulatingdevice comprising the combination with an injector, a check valve and apipe connecting the injector and check valve, of avalve adapted tocontrol the passage of particles through greateroVerIap than the other,whereby when the valve isrot-ated the opening in one section of the pipewill be opened previous to the opening of the other section of the pipe.

in perfect contact with the 'face of the cas-, ingand to accomplish thisresult a spiral check valve, of a v ve ca. communicating with J pipe andinjector, aa'valv seated; 1n*'said 2. In a pressure regulatingdevice thecombination with an injeCto'r,-a check valve and a pipe extending fromthe injector the check valve, of 'a valve adapted to control the passageof particles through said pipe; said valve havingan' openingtherethrough, a casing surrounding the valve and having portscommunicating with the" openings of the pipe-section, one-,faceof thevalve having a greater overlap than-the opposite face, whereby when thevalveis rotated one of the 'ports'will be opened previous to. the otherand. means cooperating with parts of the'injecjtor to operate said,

with-the operationrof the "al ve coincident 1n ector. Y

3.- A pressureregulatlng device eomprising being tapered, of a taperedvalve adapted to enter said casing and be rotated to 1 cover or uncover,said ports, said valve" having anopening therethrough onefiac of thevalve overlapping its port a'greater-Jlistimes than the other, wherebyone of the ports will beuopened previous'to' the other. port, means todirect pressure, against the" end of thevalve to.'hold the same seated'against the wall of the casing and means to rotate said valve. 1

' 4. A pressure regulating device comprist in a casin havin orts thereinsaid cas-J' ing-the combination withau injector having a lever tooperate; the sanie,'aicheck valvei and a pipe connecting the lnj'ectjorfwith-the -having ports iifif'g'sQin' the casing and having. anopening itherethrough said valve cotipe'rating with said ports, one faceof the valve overlapping its port a greater distance than the other,whereby one of the ports will be opened'previo'us to the opening of theopposite" port, an exhaust port comniunic'ating'with the valve casingand means connec't'edwlth said lever to;

operate said valve when theilev'er is moved to operate'the injector, I A

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses. I

' BOOTH.

CHAS. VA LBERT Witnesses: Tea-m cs J .M'CCORMICK,

E'. R. HOGAN. i

